The test results show that the 3D SPIHT algorithm based on 3D DWT for hyperspectral images compression is very efficient, the algorithm is embedded and has modest complexity.
实验证明，基于3维小波变换的3维SPIHT编码算法在对超光谱图像压缩时，表现出了优良的率失真性能。 并且算法复杂度适中，具有嵌入式特性。
An algorithm based on DWT and iterative blending was proposed.
提出了基于DWT与迭代混合的数字水印算法。
A new image blind watermarking algorithm based on adaptive quantization step in discrete wavelet transform (DWT) is proposed, which can be used in copyright authentication.
提出了一种可用于版权认证的基于小波变换域自适应量化步长的图像盲水印算法。
On the basis of the characteristics of MP3 compression and local audio correlation, a new adaptive digital audio watermarking based on DWT and DCT was proposed.
以mp3压缩等攻击特点及局部音频相关特性为基础，提出了一种新的混合域数字音频盲水印算法。
This paper proposes a novel robust spread-spectrum (ss) audio watermarking scheme based on DWT, in which a watermark is embedded into wavelet domain which original audio signal is transformed to.
文章提出一种基于小波变换的新颖的鲁棒语音扩谱水印算法。算法对原始语音进行离散小波变换，利用扩谱水印技术将水印隐藏到小波域。
Compared with DCT-based system, DWT-base watermark system is an adaptive system.
相比较DCT系统，DWT水印系统可以实现水印的自适应嵌入。
A novel meaning binary image digital watermarking algorithm based on DWT and DCT is proposed.
提出一种基于DWT和DCT域的有意义二值图像数字水印算法；
So this paper puts forward the research approach of color images watermarking based on DWT, this method can increase the protection information and expand and the hiding range.
为此，本文提出基于DWT域的数字水印嵌入彩色图像的研究方法，该方法为增加知识产权的保护信息量和扩大隐藏对象范围提供一种途径。
In this paper, a multipurpose image watermarking algorithm based on chaos and DWT (Discrete Wavelet Transform) is proposed.
提出了一种基于混沌的DWT域多功能图像数字水印算法。
Then, two new embedding technologies about gray digital watermarking are suggested, based on DWT and DCT separately. The author implements them and analyzes their results and performances.
随后提出了两种分别基于DWT和DCT变换的嵌入灰度图水印的新方法，加以实现并对实验结果和算法性能进行初步分析讨论。
In this paper, we preset the processing elements based on a special butterfly computation and discrible the systolic array implementations for computing DCT, DHT(DWT) and DFT respectively.
文中绐出了两种基于特殊蝶形运算的处理单元和两种计算DCT，DHT（DWT）和DFT的脉动阵列实现。
In order to satisfy the new requires to digital watermark, we propose a chaotic encrypted image digital watermarking algorithm based on DWT domain in this paper.
为了对数字水印技术的新需求，我们在本文中提出了一种基于混沌加密的频率域数字图像水印新算法。
Finally, on the basis of studying single digital watermarking, proposes a double digital algorithm based on SVD and DWT.
最后，在研究单数字水印的基础上，提出了一种基于SVD和DWT的双数字水印算法。
According to the digital image watermarking technology, two embedding algorithms based on DWT and corresponsive distilling algorithms are studied.
针对数字图像水印技术，比较系统地研究了基于DWT域的两种数字图像水印嵌入算法及对应的提取算法。
Presents a novel texture retrieval approach of medical images based on statistic model by Dual-Tree Complex Wavelet Trans - form (DT-CWT) for the shift sensitivity and poor directionality of DWT.
针对离散小波变换具有平移变化性和弱方向性的特性，本文提出了一种基于双树复小波变换(DT- CWT)统计模型的医学图像纹理检索方法。
Two kinds of digital watermark methods about image based on DCT and DWT in frequency domain were mainly researched in this article.
本文主要研究了变换域中基于DCT和DWT的两种图像数字水印方法。
This paper presents an audio hiding algorithm based on DWT. The security information is embedded in the larger coefficients of high frequency range detail signal.
提出了一种基于小波变换的语音信息隐藏算法，算法在小波变换的高频系数中嵌入密文信息，获得了很好的隐藏效果。
This paper proposes to use DCT, DWT to hide the information twice, and provides the hidden method and the possible processes based on the correlative theory.
应用dct和DWT两种变换方式对信息进行二次隐藏，根据相关理论提出隐藏的算法和实现的可能过程，并对实现中可能存在的不足和改进进行了简要分析。
With the enforcement of the new compression standard of picture and video, the digital watermarking technology based on DWT are becoming the focus of the research of digital watermarking.
随着新的图像和视频压缩标准的施行，基于离散小波变换的数字水印技术成为研究的热点。
In order to face the new still image compression standard JPEG2000, the research work in the thesis is basically based on DWT.
为了面向新的国际图像静态压缩标准JPEG2000，本文的研究以DWT为主。
The characteristics of the vibration signals of the gasoline engine is analyzed based on DWT and put forward the strategies for real-time control.
基于DWT分析汽油机振动信号特征，提出适于实时应用的爆震控制策略。
This paper brings forward a text embedding digital watermarking method based on image's DWT domain, meanwhile, using the chaotic sequences to encrypt the text data and BCH code to correct them.
提出了一种在图像小波域中嵌入文字的新型鲁棒水印算法，并对嵌入的文字进行混沌加密和BCH纠错编码。
Currently, there are many DWT (Discrete wavelet Transform) based watermarking algorithms, but few of them discuss the issue in association with fractal image coding in wavelet domain.
目前有很多基于离散小波变换(DWT)的水印算法，但结合分形编码技术的很少。
Combining the thought dimensioned above, with discrete cosine transform-based and DWT-based compression algorithms, the OMIS multi-spectral images are compressed.
结合这种压缩思想，用基于离散余弦变换和基于离散小波变换的压缩算法，对实用型模块化成像光谱仪多光谱图像进行压缩。
Absrtact: Proposes a blind robust image watermarking algorithm based on DWT and DCT.
摘要：文中提出了一种DWT与DCT相结合的灰度图像盲水印算法。
This thesis achieves the following three innovative results: 1 the thesis presents a new parallel array 2-d discrete wavelet transform DWT hardware architecture based on lifting schemes.
以下是本文的三个创新性成果：1设计了一种并行阵列式二维离散小波变换DWT提升格式的硬件结构。
Though many DWT-based watermarking algorithms have been presented, few of them discuss the issue that which detail subband is the better choice to watermark.
目前有很多基于离散小波变换 （DWT）的水印算法，但很少讨论到水印嵌入子带的选择问题。
Based on the finite element model of whole ship-bridge, the head-on collision process between a 40000 t DWT oil ship with bulb bow and a bridge pier is simulated.
简述了该技术的基本原理，并基于整船整桥模型对一艘4万吨实船与桥梁的碰撞过程进行了计算。
Based on the finite element model of whole ship-bridge, the head-on collision process between a 40000 t DWT oil ship with bulb bow and a bridge pier is simulated.
简述了该技术的基本原理，并基于整船整桥模型对一艘4万吨实船与桥梁的碰撞过程进行了计算。
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